Remove the extra directories to include that were needed by the Opus library. Now the lib includes more specific paths to avoid those.
110 lines
5.3 KiB
C
110 lines
5.3 KiB
C
/* Copyright (c) 2001-2011 Timothy B. Terriberry
|
|
Copyright (c) 2008-2009 Xiph.Org Foundation */
|
|
/*
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
|
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#if !defined(_entenc_H)
|
|
# define _entenc_H (1)
|
|
# include <stddef.h>
|
|
# include "opus/celt/entcode.h"
|
|
|
|
/*Initializes the encoder.
|
|
_buf: The buffer to store output bytes in.
|
|
_size: The size of the buffer, in chars.*/
|
|
void ec_enc_init(ec_enc *_this,unsigned char *_buf,opus_uint32 _size);
|
|
/*Encodes a symbol given its frequency information.
|
|
The frequency information must be discernable by the decoder, assuming it
|
|
has read only the previous symbols from the stream.
|
|
It is allowable to change the frequency information, or even the entire
|
|
source alphabet, so long as the decoder can tell from the context of the
|
|
previously encoded information that it is supposed to do so as well.
|
|
_fl: The cumulative frequency of all symbols that come before the one to be
|
|
encoded.
|
|
_fh: The cumulative frequency of all symbols up to and including the one to
|
|
be encoded.
|
|
Together with _fl, this defines the range [_fl,_fh) in which the
|
|
decoded value will fall.
|
|
_ft: The sum of the frequencies of all the symbols*/
|
|
void ec_encode(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _ft);
|
|
|
|
/*Equivalent to ec_encode() with _ft==1<<_bits.*/
|
|
void ec_encode_bin(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _bits);
|
|
|
|
/* Encode a bit that has a 1/(1<<_logp) probability of being a one */
|
|
void ec_enc_bit_logp(ec_enc *_this,int _val,unsigned _logp);
|
|
|
|
/*Encodes a symbol given an "inverse" CDF table.
|
|
_s: The index of the symbol to encode.
|
|
_icdf: The "inverse" CDF, such that symbol _s falls in the range
|
|
[_s>0?ft-_icdf[_s-1]:0,ft-_icdf[_s]), where ft=1<<_ftb.
|
|
The values must be monotonically non-increasing, and the last value
|
|
must be 0.
|
|
_ftb: The number of bits of precision in the cumulative distribution.*/
|
|
void ec_enc_icdf(ec_enc *_this,int _s,const unsigned char *_icdf,unsigned _ftb);
|
|
|
|
/*Encodes a raw unsigned integer in the stream.
|
|
_fl: The integer to encode.
|
|
_ft: The number of integers that can be encoded (one more than the max).
|
|
This must be at least one, and no more than 2**32-1.*/
|
|
void ec_enc_uint(ec_enc *_this,opus_uint32 _fl,opus_uint32 _ft);
|
|
|
|
/*Encodes a sequence of raw bits in the stream.
|
|
_fl: The bits to encode.
|
|
_ftb: The number of bits to encode.
|
|
This must be between 1 and 25, inclusive.*/
|
|
void ec_enc_bits(ec_enc *_this,opus_uint32 _fl,unsigned _ftb);
|
|
|
|
/*Overwrites a few bits at the very start of an existing stream, after they
|
|
have already been encoded.
|
|
This makes it possible to have a few flags up front, where it is easy for
|
|
decoders to access them without parsing the whole stream, even if their
|
|
values are not determined until late in the encoding process, without having
|
|
to buffer all the intermediate symbols in the encoder.
|
|
In order for this to work, at least _nbits bits must have already been
|
|
encoded using probabilities that are an exact power of two.
|
|
The encoder can verify the number of encoded bits is sufficient, but cannot
|
|
check this latter condition.
|
|
_val: The bits to encode (in the least _nbits significant bits).
|
|
They will be decoded in order from most-significant to least.
|
|
_nbits: The number of bits to overwrite.
|
|
This must be no more than 8.*/
|
|
void ec_enc_patch_initial_bits(ec_enc *_this,unsigned _val,unsigned _nbits);
|
|
|
|
/*Compacts the data to fit in the target size.
|
|
This moves up the raw bits at the end of the current buffer so they are at
|
|
the end of the new buffer size.
|
|
The caller must ensure that the amount of data that's already been written
|
|
will fit in the new size.
|
|
_size: The number of bytes in the new buffer.
|
|
This must be large enough to contain the bits already written, and
|
|
must be no larger than the existing size.*/
|
|
void ec_enc_shrink(ec_enc *_this,opus_uint32 _size);
|
|
|
|
/*Indicates that there are no more symbols to encode.
|
|
All reamining output bytes are flushed to the output buffer.
|
|
ec_enc_init() must be called before the encoder can be used again.*/
|
|
void ec_enc_done(ec_enc *_this);
|
|
|
|
#endif
|